A basic segment of a rural freeway has the following characteristics:• Four-lanes (two lanes in each direction)%3BThere is one ramp within 3 miles upstream, and 2 ramps within 3 miles downstream;10-ft lanes;Right shoulder width of 4 ft;• Level terrain;.10% trucks and 5% buses in the vehicle stream.Calculate the FFS at this freeway section and then determine the level of service (LOS) when theflow rate is 1740 pc/h/In.(Write the answer for the LOS in the box below).

Answered: Calculate the FFS at this freeway…

Calculate the FFS at this freeway section and then determine the level of service (LOS) when the flow rate is 1740 pc/h/In.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Intersection Design

An intersection is a location where two or more roads or railways meet or join. The traffic movement is controlled at the intersection that depends on its design and type. It governs the operation, efficiency, speed, capacity, and safety of the highways, airways, and railways. The movement of the pedestrian causes hazards and delays at the intersection.

Question

A basic segment of a rural freeway has the following characteristics:
• Four-lanes (two lanes in each direction)%3B
There is one ramp within 3 miles upstream, and 2 ramps within 3 miles downstream;
10-ft lanes;
Right shoulder width of 4 ft;
• Level terrain;.
10% trucks and 5% buses in the vehicle stream.
Calculate the FFS at this freeway section and then determine the level of service (LOS) when the
flow rate is 1740 pc/h/In.
(Write the answer for the LOS in the box below).

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Consider the problem of traffic flow on a three-lane (one direction) freeway which can be described by the Greenshields model. One lane of the three lanes on a section of this freeway will have to be closed to undertake an emergency bridge repair that is expected to take several hours. It is estimated that the capacity at the work zone will be reduced by 30 percent of that of the section just upstream of the work zone. The mean free flow speed of the highway is 60 mi/h and the jam density is 130 veh/mi/ln. It is estimated that the demand flow on the highway during the emergency repairs is 86 percent of the capacity. Using the deterministic approach, determine the following for the expected repair periods of 1 h, 1.5 h, 2.5 h, 2.75 h, and 3 h. (a) the maximum queue length (in veh) that will be formed 1 h veh1.5 h veh2.5 h veh2.75 h veh3 h veh (b) the total delay (in h) 1 h h1.5 h h2.5 h h2.75 h h3 h h (c) the number of vehicles that will…
Problem 2. New freeway is being designed on a level terrain, free-flow speed 70 mph 12-ft lanes, 6-ft lateral clearance Peak hour volume 2700 veh, 12% heavy vehicles PHF = 0.92 FIND: Number of lanes for LOS C
A segment of rural freeway is being designed for a FFS of 70 mph through rolling terrain. The directional (i.e. one-way) design volume is 3,000 vehicles per hour. If 10% of the design volume is expected to be heavy vehicles (i.e. trucks and buses), what is the heavy vehicle adjustment used to determine the flow rate? Provide you answer to the nearest hundredths.
The heavy vehicle adjustment factor for a freeway in rolling terrain with 5% heavy trucks is: 1.08 1.13 0.89 0.93 1.00 OOO O